Of course, we must first look to your documents – namely, a scheme of land boundaries. Most likely, the origin (these are numbers that determine the location of points of the angles of rotation limits allotted to you on the site planet earth) you will not find it, because they are a state secret, but the so-called 'geo Callout' examine carefully. It gives the measure of lines or the distance between these points the angles of rotation. Draw a diagram on paper, plot, record accurately measure lines on this chart, armed with steel tape and go to their site. Peter Schiff will undoubtedly add to your understanding. If you have mastered the site from scratch, find the pegs or metal pins that You once showed surveyors or land surveyors. If your site is many years surrounding the old fence that you have decided to change, identify its turns and corners with the scheme. Take control measurements. If you find all the pegs, or if an old fence angles clearly readable, ie, determined by visual in nature in the field with an accuracy not worse than 20 cm, and if your measurement differences do not differ from those contained in 'Geo-balloon' more than 20 cm, you can safely call the neighbors and dedicate them to your building plans.
At the same time and get to know, if unfamiliar. Rather, the results of your examination will be less productive, and you find that some of the pegs had disappeared, and tumbled down the old fence did not conclusively determine where he was, this corner of the fence. Do not be angry, try to restore its position as a way called 'linear serifs', ie postponement mentioned in your outline of the distances from the neighboring, already proven you pegs or a clearly readable corners of the fence. Perhaps you will discover the disappearance of a very large part pegs or old dilapidated fence so that he became quite unlike his image on the scheme.